Good. It's nasty and inconsiderate of other people. Use soap and water and wash your hands like a civilised person.

If you’re washing your hands after the bathroom, what does it matter how other people flush? I don’t want to touch anything your hands have touched either. You just wiped with those hands, nasty.

So how do you unlock the toilet door being that peoples unwashed hands have touched that too

I wash my hands after.

Exactly. Unless you're terribly unhygienic and don't keep your hands clean, your hands - even after wiping - are going to be cleaner than the sole of your shoe. Seriously the bottom of your shoes/feet (if you walk barefeet) are the grossest thing on you. Be considerate of others, flush with your hands, open the door with your hands, and then wash your hands. It's not that hard.

Or stop telling people how to use the bathroom, and just wash your own hands.

Por que no los dos?

Stop telling people how to use the bathroom and wash your hands? I’m with you- do both.

Wow. You’re pretty upset by the way other people flush toilets. What a weird thing to be mad about.

A regular person uses their hand and then washes it.

If you’re washing your hands, what does it matter?

Hopefully, OP has learned this the hard way.